It also questions whether food policy has attracted enough attention in the Brexit deliberations so far, particularly with regard to the importance of migrant workers to United Kingdom food producers, and says that the latest Chequers white paper proposing close alignment with the European Union only for farming and manufacturing, but not for retail or food service "injects a fault-line into the United Kingdom food system between production and service sectors".
Barnier, however, is said to have rejected this idea out of hand, saying that such a scheme would not allow the European Union to unilaterally make decisions about equivalence, something it wishes to do.
Mr Raab appeared alongside the Prime Minister' Europe adviser Olly Robbins in front of MPs amid increasing Brexiteer concerns about the influence of the senior civil servant.
British Prime Minister Theresa May said the public should be reassured rather than alarmed by government plans to stockpile medicines and blood products ahead of a possible no-deal Brexit.
The government is stepping up planning for a "no deal" Brexit.
The EU would not delegate "excises duty collection to a non-member", he said.
But Mr Barnier said retaining control of the money, law and borders also applied to the EU's customs policy. But he had added: "On our future economic relationship it comes as no surprise that finding common ground between the EU27 and the United Kingdom is more hard".
1 dead, police arrest shooting suspect who was barricaded inside USA supermarket
Other videos showed an employee dragging a person out of the store and employees escaping on a rope ladder outside a window. Police suspect Atkins shot his grandmother seven times and wounded another woman before leading officers on the pursuit.
In a statement backing the People's Vote campaign, he said: "I am not a politician but I know when something is going wrong and right now Brexit feels like it is going very wrong indeed".
One of the key questions in the Brexit process is how much detail about the future relationship - including the crucial issue of financial services - will be pinned down before the United Kingdom leaves. We are a great entrepreneurial, innovative, creative country, we've got huge skills here, our universities are fantastic.
Freudenberg said the MHRA, who he called on to register products to allow patients in the United Kingdom to continue accessing them, was passing responsibility for avoiding a potentially devastating shortage to the EMA.
Barnier said a "legally operative backstop" must be arrived at to conclude the withdrawal agreement.
Hungarian foreign minister Péter Szijjártó has previously warned that it would be the European Union which would be hit hardest, as the bloc sells more to the United Kingdom than vice versa and could lose market share to global economies through the UK signing trade deals with alternative partners.
Some countries, particularly the UK's closest trading partners, want questions about the future economic relationship left open, to be worked out during the 21-month transition period after Britain has left.